A.L.1 PART III - HANDLING
Airbrake Low IAS-negligible. High IAS
and high mach no.-slight
transient nose-down moderate
nose-up when extended.
(f) Flying in turbulent conditions
The recommended speeds for flight in turbulent conditions are as
Climbing or level flight .. Above 25,000ft. 0.83M
Below 25,000 ft. 350 knots
Descending (airbrake out, Above 35,000 ft. 0.83M
flap 20°) .. .. .. Below 35,000 ft. 280 knots
(g) Flying with electric follow-up tailplane
(i) The electric follow-up tail gives an improvement in manoeuvring
capabilities above 0.9M. Handling characteristics are otherwise
normal, but it should be noted that the interconnection remains
fully operative with the elevator in Manual.
(ii) The tailplane interconnection can be selected ON or OFF at
any speed provided that the aircraft is trimmed for hands off
flight whenever either selection is made. The aircraft should be
flown in the trimmed condition whenever possible.
(h) Flying with drop tanks on inboard and outboard pylons
(i) At speeds below the permitted maximum the handling character-
istics are similar to those for clean aircraft and with fuel in the
drop tanks rolling manoeuvres must not exceed 360°. During
combat manoeuvres with fuel in the tanks it is recommended
that aileron movement is restricted to half of full movement to
avoid an excessive rate of roll.
(ii) Pressure errors
The presence of drop tanks on the outboard pylons has a
material effect on pressure error at high speeds; resulting in
under-reading of the ASI and machmeter as compared with
(iii Practice Manual flying
Practice selection of Manual should not be made when carrying
external stores other than empty inboard drop tanks since their
presence increases the difficulties of reselecting Power.
(j) Flying with RP's
Aileron movement becomes restricted at 0.97M when carrying
RP's. When drop tanks are carried on the inboard pylons it is
difficult to exceed .98M.
(k) Flying for endurance
The recommended speed is 180 knots.
71. Flying at reduced airspeed
(a) Fly at 70-200 knots using 23° (2 notches down) flap.
(b) The hood may be opened fully below 200 knots, but at about 150
knots excessive vibration sets in. This vibration is reduced if the